Connecting block



FIG. 1 is a top, front and left side perspective view of a connecting block showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a top, front and left side perspective view of a connecting block showing a second embodiment of our new design with the sliding door in the open position;

FIG. 9 is a perspective view thereof with the sliding door in the closed position;

FIG. 10 is a front elevational view thereof;

FIG. 11 is a right side elevational view thereof;

FIG. 12 is a left side elevational view thereof. 

The ornamental design for a connecting block, as shown and described. 